ability to suffer with those that you see suffer and at the same time, you know, retain the name of action. you can keep doing things and be decisive. being thoughtful is not antithetical to being decisive. >> there was a scene that i knew immediately when we saw the movie i had to ask you about. lincoln walks from the white house to the telegraph center where he went regularly to receive messages from his generals and his reports from the battlefield. and he's sitting there almost as if he's talking to the two telegraph operators, but it's really a soliloquy in which he talks about euclid. >> euclid's first common notion is this: 'things which are equal to the same thing are equal to each other.' that's a rule of mathematical reasoning. it's true because it works. has done and always will do. in his book, euclid says this is self-evident. you see, there it is. even in that 2,000 year old book of mechanical law, it is a self- evident truth that things which are equal to the same thing are equal to each other." >> what led you to include that scene? >> i was fascinated to read that when he